Home / 513,051.60-769,577.40-139,074.60

Finding the Fourth Proportional to 513,051.60, 769,577.40 and 139,074.60

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Solution

The fourth proportional to 513,051.60, 769,577.40 and 139,074.60 is: 208,611.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,051.60 : 769,577.40 = 139,074.60 : x
  2. Step 2: Convert to fraction form
    513,051.60/769,577.40 = 139,074.60/x
  3. Step 3: Cross multiply
    513,051.60x = 769,577.40 × 139,074.60
  4. Step 4: Simplify right side
    513,051.60x = 107,028,669,074.04
  5. Step 5: Solve for x
    x = 107,028,669,074.04/513,051.60
  6. Step 6: Final answer
    x = 208,611.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.